Wrench



Patented Feb. 19, 1924.

' duNl'rlezu STATES JOHN n. ILLIG, ornurrnro, unwitzonxf wennen.

` Appueauon ined august 9, 192'1.- yserialV No. 49eme.' l

To all 'whom t 'may concer/n.'

Be 1t known that JOHN H. ILLIG, aY citizen l of the United States, residing at Buffalo, in

, vinwrenehes heretofore devised, the stem was made separately from the movable jaw and secured thereto after it hadbeen threadedb This construction is vexpensive -tomanufac ture `and also unsatisfactory owing to the more or less unreliable connectionv between the 'movable jaw and the stem.

' The objects ofthis'invention aretopro-v duce a wrench 'of this kind by an improved method of manufacture, whereby the movable jaw is provided with an internal threaded stem; also to improvethe construction of wrenches in such a manner that the movable jaw of the wrench may be provided with an integral threaded'stem; also to improve the construction of wrenches of this kind in the l other respects hereinafterspecified.

In the accompanying drawings: Y

Fig. l is a face view of a, wrench embodying the invention. i

Fig. 2 is afragmentary central sectional elevationthereof. v f l Fig.` 3 is Va side view of the movable jaw member before the threaded stem` has been bentl into a position'parallel tothe beseofY theimovable jaw. v Y A Y d view of the movable jaw.

` Fig.Y 4 is an en Figi 5 is asection of thewrench on line 5 5, Fig, 2. v Figl 6 1s slightly modified construction. l n

f The wrench to which the invention is applied includes as shown in the accompany.- ing drawings, the usual handle A havingzat one'end thereof an enlarged part forming a head'B and whichV is provided with an integral fixed jaw C. The head is provided with the usual longitudinal slot for guiding the movable j aw, the slot shown comprising a. neck portion b of reduced width, a guide portion b connecting with theneck portion "an end view of a movablejaw of` PATENTweer b and preferably formed by drillingra hole lengthwise of theA lhead. The slot alsoincludes a second substantiallyy cylindrical portion 'b2 also formed by drilling a hole so' lengthwise of the head, vthe two parallelV drilled' holes formingthe portions band b? 1 preferably'overlapping lor intersecting? soy that the slots b" and b2 are connected.` The head yof the wrenchA is also provided with outer flat faces b3v at oppositeV s-ides ofthev slot which ,terminate at thejaw C'. The

wrench head. also has the usual transverse hole b4 extending'th'erethrough and in which yanadjusting nut D is arranged. Awrench head of other'construction may befused in connection'withthis invention.-l f i The movable member of the wrench in'- Y cludes a .jawportion E which is adapted to cooperate with the liXed jaw C to" grip the work. Thisl jaw portion 'is connected by A' means of a neck e yofreduced thickness with Y I a base Fwhich is formed to enter into the rcylindricalportion b of the slot, the neck e Vof the movable member' passingthrough the neck 'portion b 'of the vslot in the wrench'- head.A ,As shown, the base Foftheniovablel member is preferably ofgreater length than the jaw portionE, sol asl to velfeCtivelyf hold the movable member :in position-inf the headv and Vfacilitate 'easy adjustment of the 'mov-2 y able jaw. The jaw portion wE isalso preferably provided adjacent to theneck ev with shoulders'eadapted to engage with the flat Y faces' b3 ofthe wrench head, so that :when

due 'to engagement with the work, the jaw willbeclampedon vthe head 'owing toa binding action `ofthe shoulders' e against the 'faces" Yb3 of the head and of the base portion-F tively to :the fixed jaw, a threaded stem'or' shankGis provided which in the construcenY the 'movable member is subject to pressure i in the cylindrical portionof the v slot. 'Y In order to adjustv the movable Ajaw relation shown is'forme'd integral with the'base Y yof thefmovable member and isk connectedY with the base by means of a, flexible reduced, A neck portion g, This construction makes it Y possible to'form the movable. member of thewrench in a' single piece andghaving `the stem or Shank- `Gr extending at. an angle toY 'i the base F as indicated in Figy@ Wheny theV stem is arranged inthis relation tothe base of the movable membe'r, the stem may be threaded by means of the ordinary threading dies. After theA threading operation is n completed, the stem or shank `canbe bent into parallel relation with the base of the movable member as shown in Fig. 2, the reduced connecting portion giacilitating'tlie bending oli the stein in thieme-nner.

may be inserted endwise into the slot inthe wrench head so that the mit D engagesjthe thread of theV stem or shank to adjust ythe movable jaw toward and' from'the fixed jaw ,lnithe' use of thel Wrench, the portion g connecting' the stem and the base does not in any way vweaken the wrench since the strains to which 'the movable member Vis subvjected, are not transmitted to `the ,stemA Gr shank is then threaded while in angular relation to the base F, the threading being done by the usualfthread cutting dies, which could not be used if the -stemwere originally formed in parallel relation to the base F.

After ,the stem has been threaded, it isbent stem tothe base..A

Y. i into a position parallel withyth'e basev F,

thus completing the movable member and eliminating the necessity Aof attaching the 'By making the base FV of the movable membersubstantially semicirciilar in cross section, the base-occupies only about one half of the drilled hole b. This affords sniicient space for the adjusting mit D to ente-r into the space between the threaded .stem

and the base F, and at the same time makes it possible to drill the two holes b and-*b2 so as to intersect. YConsequently, byY so. forming the base F that the same occupies konly a part of the guide hole b', an inexpensive construction is made possible. Fig. 6 shows a movable member Hyot slightly modified construction7- in Ythat this member is made with a stem h, whichextends laterally with reference tothe lbaseportion of the jaw. After the stem hasbeen threaded, it isbent to extend substantially parallel to the base portion of the jaw yso that the movable member When linished ,is

'^ identical with the one shown in Figs. 1:5.

The wrenchrdescribed has decided advantages over whenehes heretofore made in that thestem Gr while arranged'in angular rela= tion to the base F can easily be threaded by When the movable member has been completed, -Iit.

ifisae'ml means of the ordinary `threading tool which Y insures an accurate cutting of the thread so that the adjustment of the movable member,

by'turning the nut D, is greatly facilitated.

rlhe bending'ofthe threadedstem into cor rect relation to the base can bervery readily effected and requres but a short interval of time. l/Vhen thestem has been bent into this is ready for use fand `noattacliing ofthe threaded stem to y.the Vmovable member isV necessary. Since the partso the Ywrench yare usually made or' wrought or ysteel iron,

' position, the movable member of the wrench n the bending of the stein G doesnot in any n way decrease the .strength of the metal l at the part where the bending takes place.

H. l'claimasmy invention: Y, 1 f y l. lIna Wrench, the combination or' a head provided witha guide slot and a Vfixed jaw,

said `slot*including* two parallel intersectf ing-holes, a movable Jaw V,having asubstantiallysemicyliiidrical base arranged in one Y' of said intersecting holes, a threaded stemj extending substantially parallel to ysaidV base l in thevotlier of said intersecting holes, and I a'hnut on said A threaded stem and extending into t space between said basefan'd said threaded stem. Y .1.:V

im wrench having .ahead provided withA aeoidecslot .and affixed. jaw, the oombination of a inovableymember comprisinga rlas@ ,of 'aerei lenga the l Saidmorolol@ jaw, and A@nook portion .Conf nootioaoaid movable jaw andY sad'lbesofend a' screw `threaded stem ,extending parallel t to said'bse and formed integral therewith and o ooileoted to Said basaba 'ieeredooeol Beek portion, whereby said-stem :may bebent to and ieromparallel relation tosaid base..

3. In a Wrench, a'movable member ycome,

prising a jaw, ,a lbase jof greater lengththan said jaw, la-neck o-redueedthiekness c oiinesting said-jaw andbase, a'serew lthreaded lOO stem integral withh and extending.parallel toeod, hase and a reduoodnook portion in# tegral with and connecting saidY base with' by Sladqstom ,may loo. bontto and from 'parY l allel-relationtosaidbase, :jv l. u .Provided -zwith ov` Y t. In a Wrench, a head guide portion and a Xod Vnew; a movable member comprising av jaw, a base connected to said second-named jawA and adaptedto move on the guide'gportion of said head, a stem eXtending'at aside of saidbaSe, aiexible connection between said. stein and'. said base, `whereby said stem .mayv bel-screw threaded yand then bent vto an operating` pos itionl with respectto said base, and anni; arranged inv said head and*- adapted toengage' said screw-threaded stem; ,i Y

i JOHN IILLIG. 

